US20120018364A1 - Filter device - Google Patents
Filter device Download PDFInfo
- Publication number
- US20120018364A1 US20120018364A1 US13/138,137 US200913138137A US2012018364A1 US 20120018364 A1 US20120018364 A1 US 20120018364A1 US 200913138137 A US200913138137 A US 200913138137A US 2012018364 A1 US2012018364 A1 US 2012018364A1
- Authority
- US
- United States
- Prior art keywords
- filter
- fluid
- receiving part
- lower receiving
- filter device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 238000004146 energy storage Methods 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 17
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/153—Anti-leakage or anti-return valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
- B01D35/31—Filter housing constructions including arrangements for environmental protection, e.g. pressure resisting features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/16—Valves
- B01D2201/167—Single-way valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/30—Filter housing constructions
- B01D2201/307—Filtering elements contained in an insert body mounted in a filter housing (double casing), e.g. to avoid contamination when removing or replacing the filter element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
Definitions
- the invention relates to a filter device comprising a filter medium disposed between two receiving parts and a connecting means located at the lower receiving part for a fluid connection to a fluid apparatus, in particular a fluid tank.
- Filter devices of this type are readily available on the market in a plurality of designs and versions.
- The are used, for instance, to filter out dirt in fluids, such as hydraulic oil. Fouling of the hydraulic oil takes place in the mounting and in the startup of the respective hydraulic system, and in addition to this initial fouling, fouling can occur during operation, for example, by penetration of dirt at the hydraulic tank as a result of inadequate tank ventilation, pipe feedthroughs, piston rod seals, and the like.
- fouling within the fluid stored in the hydraulic tank occurs in hydraulic systems of heavy machinery such as earth moving machinery, excavators, or the like, it can be advantageous to effect filtration directly in the region of the hydraulic tank, for example, by the filter device being installed directly in the tank, the hydraulic oil taken from the tank contents being supplied directly to a filter element to filter out the dirt, which element is held, for example, in a housing in the form of a cartridge, the cleaned fluid then being returned to the tank unit via the connecting means.
- the filter medium is used up during operation of these devices so that changing of the housing, which is designed, for example, as a cartridge, is necessary for replacement by a housing which contains a fresh filter medium, it can be useful to block off the fluid connections on connection regions of the filter housing. This prevents the risk that when the housing is dismounted, residual amounts of fluid emerge from the filter housing as a type of leakage flow; this leads to contamination problems in the environment.
- DE 10 2004 014 149 B4 discloses a solution for a filter device which is installed in a fluid tank and in which there is a shut-off device which can be actuated by turning a rotary slide valve.
- the rotary slide valve is pivotally mounted on a connecting plate located in the fluid tank and in a clearing rotary position clears a fluid inlet via which the fluid to be cleaned travels to the dirty side via an inlet opening on the filter housing, and an outlet opening of the connecting plate via which cleaned fluid emerges from the clean side of the filter housing through an outlet opening of the filter housing.
- a disk valve which is pretensioned into the closed position and which can be controlled into the respective clearance position by control projections protruding on the rotary slide valve in the rotary release position of the rotary slide valve.
- the object of the invention is to make available a filter device of the indicated type which is characterized by a very simple construction and user friendliness.
- all components of the blocking means by means of which the fluid connections on the connecting part of the filter element can be cut off are structurally assigned to the lower receiving part of the fluid tank and are designed such that they act to block automatically by the action of the energy storage mechanism assigned to it.
- a rotary slide valve provided on the pertinent fluid apparatus such as the fluid tank, not only does this afford the advantage of the simplified construction which can be economically produced, but operation takes place independently of control parts which can be moved on the pertinent fluid apparatus, such as the rotary slide valve of the aforementioned solution, so that construction is also simplified for the fluid apparatus and operation is simple and convenient.
- the filter element of the device for movement of the lower receiving part, can be moved relative to the closure part in a shell, which in the vicinity of the upper receiving part has a closed end and on the lower end is closed by a closure part which forms part of the shell, such that when the closure part and the lower receiving part adjoin one another to form a seal, a fluid-tight enclosure of the space between the outside of the filter medium and the shell is formed.
- the filter element forms a type of filter cartridge which can be easily and conveniently removed and installed for the replacement of the used filter medium as a whole.
- the second energy storage mechanism can be advantageously formed by a compression spring which is clamped between the closed end of the shell and the upper receiving part.
- the filter medium results in a fluid-permeable support tube which defines an inner filter cavity
- the arrangement can be made such that, proceeding from a central opening of the lower receiving part, which opening forms a component of the connecting means, a spring housing extends into the support tube, where on the spring housing a compression spring, which is used as a first energy storage mechanism, is supported, whose other end pretensions the closing part which is movably guided in the spring housing into its closed position which is in contact with the opening edge of the central opening.
- the blocking means which has the closing part is therefore integrated into the filter cavity, including the pertinent energy storage mechanism, as a result of which the construction of the filter element is compact.
- the arrangement can be advantageously made such that a connecting piece of the assigned fluid apparatus, which piece is designed for the formation of a fluid connection in interaction with the connecting means, can be inserted into the central opening of the lower receiving part and on the edge side is provided with at least one control part which is supported on the closing part in the course of the insertion motion.
- the compression springs are designed such that the spring which is used as the first energy storage mechanism has a stiffer characteristic than the compression spring which forms the second energy storage mechanism, the shell can be moved by tensioning the compression spring which forms the second energy storage mechanism to end the sealing contact of the lower receiving part with the closure unit and the control part of the connecting piece being in contact with the closing part; this can easily take place by the operator pressing on the shell to push in the filter element when a new filter element is being installed.
- the arrangement can be advantageously made such that the shell for insertion and removal along the inside wall of an outer housing of the device in which the connecting piece is immovably fixed, is movably guided on the outer periphery of the closure part and that the inside wall has a first displacement section which at a transition point undergoes transition into a second sealing section on the end of the displacement path on which the inside diameter is reduced for sealing interaction with a radial seal located on the closure part.
- the installation and removal of the filter element are made especially simple and convenient by a low friction displacement motion being enabled within the displacement section, while after traversing the transition point on the end of the. displacement path, a good seal of the outer periphery of the closure part is ensured.
- the outer housing can be installed in a fluid tank to whose interior it is functionally connected via the connecting piece and via fluid passages which lead to the closure part of the filter cartridge.
- the subject matter of the invention is also a fluid apparatus, especially a fluid tank, with a filter device according to one of claims 1 to 9 .
- FIG. 1 shows a simplified longitudinal section of one exemplary embodiment of the filter device, the filter element being designed to form a so-called in-tank device for installation in a fluid tank, of which only an upper tank wall section with an outside housing of the device inserted through an installation opening in it is visible, and where the filter element at the beginning of the installation process at the start of its insertion motion into the outer housing is shown;
- FIG. 2 shows a cutaway corresponding to FIG. 1 , the insertion motion of the filter element being continued, but the latter not yet being completely installed;
- FIG. 3 shows a cutaway corresponding to FIGS. 1 and 2 , in which continued insertion motion is shown with the installation process not yet complete, and
- FIG. 4 shows a corresponding cutaway, the operating state which has been reached after the completed installation process being shown.
- the filter device forms a so-called in-tank filter device, the filter element being connected to a fluid apparatus in the form of a fluid tank.
- the drawings show only one section of its upper tank wall 1 with an installation opening 3 via which an outer housing 5 , which is open on the tank wall opening 3 , is installed in the tank.
- the outer housing 5 on its lower end is connected to the contents of the fluid tank via a connecting piece 7 which is concentric to the longitudinal axis of the housing and via another fluid passage 9 .
- the circular cylindrical outer housing 5 with its inside wall forms a sliding guide for the insertion and withdrawal of a filter element designated as a whole as 11 in FIG. 1 .
- the latter forms a unit which can be replaced as a whole as a so-called filter cartridge.
- the latter has a shell 13 in the form of a hollow cylinder which is closed on the end 15 which is at the top in the drawings, with the formation of a bulging end surface.
- the shell 13 On the opposing lower end, the shell 13 has a closure part 17 in the form of a ring body which has been press-molded out of plastic and which on the outer periphery forms an annular edge 19 which projects axially on the outside of the shell 13 and on whose inside wall the fixed connection to the end of the shell 13 is formed by a crimping 21 .
- the outer periphery of the annular edge 19 forms a slide surface on which the filter element 11 is movably guided on the inside wall of the outer housing 5 , the seal being formed by the radial seal 23 on the closure part 17 .
- On the inside of the axially projecting annular edge 19 there is another sealing element 25 for sealing relative to the shell 13 .
- a filter medium 27 in the form of a filter mat which surrounds a fluid-permeable support tube 29 .
- the upper end of the filter medium 27 with the assigned end of the support tube 29 is enclosed by an upper receiving part 31 which closes the inner filter cavity 33 located within the support tube 29 on the upper end and is press-molded from plastic.
- On the lower end, the filter medium 27 and support tube 29 are enclosed by a lower receiving part 35 which is formed by an annular body which has been press-molded from plastic.
- This receiving part 35 with its central opening 37 forms a connecting means which in the operating state of the device, which is shown in FIG. 4 detailed below, establishes the fluid connection to the connecting piece 7 and thus the fluid tank.
- a sealing element 39 on the inside wall of the opening 37 to seal the fluid connection.
- a spring housing 41 extends into the inner filter cavity 33 .
- the spring housing 41 which has several wall openings which are not shown in the drawings, there is a compression spring 43 which is designated as the first energy storage device here and which, on the one hand, is supported on the upper end of the spring housing 41 and, on the other hand, on a closing part 45 which is axially movable in the spring housing 41 against the action of the compression spring 43 , which normally pretensions the closing part 45 into a blocked position at which the connecting means is closed by the closing part 45 with a spring disk-like closing plate 47 adjoining the edge of the opening 37 .
- FIGS. 1 to 3 instead of an annular body, which has been press-molded from plastic, it can also be made of other suitable materials, such as an aluminum diecasting or plastic injection molding.
- a compression spring 49 which is designated as the second energy storage mechanism, is clamped between the upper receiving part 31 and the closed end 15 of the shell of 13 .
- the unit formed between the receiving parts 31 and 35 is pretensioned within the shell 13 normally for contact of the lower receiving part 35 with the closure part 17 .
- FIGS. 1 and 2 This state is shown in FIGS. 1 and 2 .
- the closure part 17 there are a central opening 51 through which the connecting piece 7 can extend and, on the other hand, passages 53 which lie radially farther to the outside and which are blocked when the force of the compression spring 49 presses the lower receiving part 35 against the closure part 17 .
- a flat ring gasket 55 on the bottom of the lower receiving part 35 .
- the shell 13 For installation of the filter element 11 , the shell 13 is pushed into the outer housing 5 , the closure part 17 with its outer periphery being guided on the inside wall of the outer housing 5 .
- this inside wall has a displacement section 57 to which a sealing section 61 of reduced inside diameter is connected at a transition site 59 ; when this section is reached in the course of the insertion or pushing-in motion, a reliable seal is formed by the radial seal 23 of the closure part 17 . This state is shown in FIGS. 3 and 4 .
- the connecting piece 7 on the upper end has an inner ring shoulder 63 by which an edge-side annulus 65 is formed into which ribs 67 of the closing part 45 , which project radially to the bottom, travel in the course of the insertion motion.
- the lower receiving part 35 remains in the same position as is shown in FIG. 2 , a sealed fluid connection being established between the connecting piece 7 and the inner filter cavity 33 via the central opening 37 on the receiving part 35 .
- the receiving part 35 therefore remains in its axial position because the compression spring 43 , which is stronger than the compression spring 49 located on the upper end, keeps the closing part 45 in its blocked position on the edge of the opening 37 and thus supports the receiving part 35 .
- the closure part 17 is pushed into the region of the sealing section 61 in the outer housing 5 , see FIG. 3 , where the passages 53 are cleared by raising the flat gasket 55 , and the upper compression spring 49 is compressed.
- the connecting piece 7 with its upper edge 69 acts as a control part which acts on the closing part 45 via its ribs 67 and which moves the closing part 45 against the action of the compression spring 43 into the spring housing 41 , as a result of which the operating state shown in FIG. 4 is attained, in which both fluid travels to the outer side of the filter medium 27 via the cleared passages 53 , and also cleaned fluid travels out of the inner filter cavity 33 into the connecting piece 7 and thus into the interior of the fluid tank past the closing part 45 which has been forced into the clearance position.
- the device is characterized by a high degree of user friendliness. Only the cover 71 need be detached for the process of replacing a filter element 11 with the used-up filter medium 27 .
- the action of the two tensioned compression springs 43 and 49 moves the filter element 11 automatically out of the operating position shown in FIG. 4 first into the intermediate position shown in FIG. 3 , after which, as the upper compression spring 49 is released, further withdrawal into the position shown in FIG. 2 automatically takes place, in which the filter cartridge protrudes so far out of the outer housing 5 that it can be comfortably grasped.
- the inner filter cavity 33 is closed by the closing part 45 which is located in the blocking position, and the space on the outside of the filter medium 27 is likewise closed on the closure part 17 because the flat gasket 55 is kept in contact with the passages 53 of the closure part 17 by the compression spring 49 .
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Filtration Of Liquid (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
- The invention relates to a filter device comprising a filter medium disposed between two receiving parts and a connecting means located at the lower receiving part for a fluid connection to a fluid apparatus, in particular a fluid tank.
- Filter devices of this type are readily available on the market in a plurality of designs and versions. The are used, for instance, to filter out dirt in fluids, such as hydraulic oil. Fouling of the hydraulic oil takes place in the mounting and in the startup of the respective hydraulic system, and in addition to this initial fouling, fouling can occur during operation, for example, by penetration of dirt at the hydraulic tank as a result of inadequate tank ventilation, pipe feedthroughs, piston rod seals, and the like. If fouling within the fluid stored in the hydraulic tank occurs in hydraulic systems of heavy machinery such as earth moving machinery, excavators, or the like, it can be advantageous to effect filtration directly in the region of the hydraulic tank, for example, by the filter device being installed directly in the tank, the hydraulic oil taken from the tank contents being supplied directly to a filter element to filter out the dirt, which element is held, for example, in a housing in the form of a cartridge, the cleaned fluid then being returned to the tank unit via the connecting means. When the filter medium is used up during operation of these devices so that changing of the housing, which is designed, for example, as a cartridge, is necessary for replacement by a housing which contains a fresh filter medium, it can be useful to block off the fluid connections on connection regions of the filter housing. This prevents the risk that when the housing is dismounted, residual amounts of fluid emerge from the filter housing as a type of leakage flow; this leads to contamination problems in the environment.
- With respect to this problem, DE 10 2004 014 149 B4 discloses a solution for a filter device which is installed in a fluid tank and in which there is a shut-off device which can be actuated by turning a rotary slide valve. The rotary slide valve is pivotally mounted on a connecting plate located in the fluid tank and in a clearing rotary position clears a fluid inlet via which the fluid to be cleaned travels to the dirty side via an inlet opening on the filter housing, and an outlet opening of the connecting plate via which cleaned fluid emerges from the clean side of the filter housing through an outlet opening of the filter housing. Both on the inlet opening and also the outlet opening of the filter housing, there is a disk valve which is pretensioned into the closed position and which can be controlled into the respective clearance position by control projections protruding on the rotary slide valve in the rotary release position of the rotary slide valve.
- Proceeding from this prior art, the object of the invention is to make available a filter device of the indicated type which is characterized by a very simple construction and user friendliness.
- This object is achieved according to the invention by a filter device which has the features of claim 1 in its entirety.
- Accordingly, in contrast to the prior art, all components of the blocking means by means of which the fluid connections on the connecting part of the filter element can be cut off are structurally assigned to the lower receiving part of the fluid tank and are designed such that they act to block automatically by the action of the energy storage mechanism assigned to it. Compared to the aforementioned known solution with a rotary slide valve provided on the pertinent fluid apparatus such as the fluid tank, not only does this afford the advantage of the simplified construction which can be economically produced, but operation takes place independently of control parts which can be moved on the pertinent fluid apparatus, such as the rotary slide valve of the aforementioned solution, so that construction is also simplified for the fluid apparatus and operation is simple and convenient.
- In especially advantageous exemplary embodiments, the filter element of the device, for movement of the lower receiving part, can be moved relative to the closure part in a shell, which in the vicinity of the upper receiving part has a closed end and on the lower end is closed by a closure part which forms part of the shell, such that when the closure part and the lower receiving part adjoin one another to form a seal, a fluid-tight enclosure of the space between the outside of the filter medium and the shell is formed. Thus the filter element forms a type of filter cartridge which can be easily and conveniently removed and installed for the replacement of the used filter medium as a whole.
- The second energy storage mechanism can be advantageously formed by a compression spring which is clamped between the closed end of the shell and the upper receiving part.
- If, as is predominantly the case in these devices, the filter medium results in a fluid-permeable support tube which defines an inner filter cavity, the arrangement can be made such that, proceeding from a central opening of the lower receiving part, which opening forms a component of the connecting means, a spring housing extends into the support tube, where on the spring housing a compression spring, which is used as a first energy storage mechanism, is supported, whose other end pretensions the closing part which is movably guided in the spring housing into its closed position which is in contact with the opening edge of the central opening. The blocking means which has the closing part is therefore integrated into the filter cavity, including the pertinent energy storage mechanism, as a result of which the construction of the filter element is compact.
- In this case, the arrangement can be advantageously made such that a connecting piece of the assigned fluid apparatus, which piece is designed for the formation of a fluid connection in interaction with the connecting means, can be inserted into the central opening of the lower receiving part and on the edge side is provided with at least one control part which is supported on the closing part in the course of the insertion motion.
- If, in this instance, the compression springs are designed such that the spring which is used as the first energy storage mechanism has a stiffer characteristic than the compression spring which forms the second energy storage mechanism, the shell can be moved by tensioning the compression spring which forms the second energy storage mechanism to end the sealing contact of the lower receiving part with the closure unit and the control part of the connecting piece being in contact with the closing part; this can easily take place by the operator pressing on the shell to push in the filter element when a new filter element is being installed. If the pushing or inserting motion continues beyond the point at which the control part makes contact with the closing part, until the compression spring which forms the second energy storage mechanism is completely compressed, a further insertion of the connecting piece into the central opening of the connecting means takes place, where the closing part then can be moved out of the closed position by the control part of the connecting piece, which control part adjoins the closing part, against the action of the compression spring which forms the first energy storage mechanism. In the course of a movement of pushing or insertion of the filter element which takes place in one direction, therefore the two blocking means on the filter element are automatically forced into the clearance position, specifically by neutralizing the seal between the receiving part and closure part and between the closing part and connecting means on the lower receiving part.
- With respect to the assignment of the filter device to a fluid apparatus, such as a fluid tank, the arrangement can be advantageously made such that the shell for insertion and removal along the inside wall of an outer housing of the device in which the connecting piece is immovably fixed, is movably guided on the outer periphery of the closure part and that the inside wall has a first displacement section which at a transition point undergoes transition into a second sealing section on the end of the displacement path on which the inside diameter is reduced for sealing interaction with a radial seal located on the closure part. Thus the installation and removal of the filter element are made especially simple and convenient by a low friction displacement motion being enabled within the displacement section, while after traversing the transition point on the end of the. displacement path, a good seal of the outer periphery of the closure part is ensured.
- In especially advantageous exemplary embodiments, the outer housing can be installed in a fluid tank to whose interior it is functionally connected via the connecting piece and via fluid passages which lead to the closure part of the filter cartridge.
- The subject matter of the invention is also a fluid apparatus, especially a fluid tank, with a filter device according to one of claims 1 to 9.
- The invention is detailed below using one exemplary embodiment shown in the drawings.
-
FIG. 1 shows a simplified longitudinal section of one exemplary embodiment of the filter device, the filter element being designed to form a so-called in-tank device for installation in a fluid tank, of which only an upper tank wall section with an outside housing of the device inserted through an installation opening in it is visible, and where the filter element at the beginning of the installation process at the start of its insertion motion into the outer housing is shown; -
FIG. 2 shows a cutaway corresponding toFIG. 1 , the insertion motion of the filter element being continued, but the latter not yet being completely installed; -
FIG. 3 shows a cutaway corresponding toFIGS. 1 and 2 , in which continued insertion motion is shown with the installation process not yet complete, and -
FIG. 4 shows a corresponding cutaway, the operating state which has been reached after the completed installation process being shown. - The invention is explained below using one example in which the filter device forms a so-called in-tank filter device, the filter element being connected to a fluid apparatus in the form of a fluid tank. Of the fluid tank, the drawings show only one section of its upper tank wall 1 with an installation opening 3 via which an
outer housing 5, which is open on thetank wall opening 3, is installed in the tank. Theouter housing 5 on its lower end is connected to the contents of the fluid tank via a connectingpiece 7 which is concentric to the longitudinal axis of the housing and via anotherfluid passage 9. The circular cylindricalouter housing 5 with its inside wall forms a sliding guide for the insertion and withdrawal of a filter element designated as a whole as 11 inFIG. 1 . The latter forms a unit which can be replaced as a whole as a so-called filter cartridge. The latter has ashell 13 in the form of a hollow cylinder which is closed on theend 15 which is at the top in the drawings, with the formation of a bulging end surface. On the opposing lower end, theshell 13 has aclosure part 17 in the form of a ring body which has been press-molded out of plastic and which on the outer periphery forms anannular edge 19 which projects axially on the outside of theshell 13 and on whose inside wall the fixed connection to the end of theshell 13 is formed by a crimping 21. The outer periphery of theannular edge 19 forms a slide surface on which thefilter element 11 is movably guided on the inside wall of theouter housing 5, the seal being formed by theradial seal 23 on theclosure part 17. On the inside of the axially projectingannular edge 19, there is another sealingelement 25 for sealing relative to theshell 13. - Within the filter cartridge which has been formed in this way, there is a
filter medium 27 in the form of a filter mat which surrounds a fluid-permeable support tube 29. The upper end of thefilter medium 27 with the assigned end of thesupport tube 29 is enclosed by an upper receivingpart 31 which closes theinner filter cavity 33 located within thesupport tube 29 on the upper end and is press-molded from plastic. On the lower end, thefilter medium 27 andsupport tube 29 are enclosed by a lower receivingpart 35 which is formed by an annular body which has been press-molded from plastic. This receivingpart 35 with itscentral opening 37 forms a connecting means which in the operating state of the device, which is shown inFIG. 4 detailed below, establishes the fluid connection to the connectingpiece 7 and thus the fluid tank. There is asealing element 39 on the inside wall of the opening 37 to seal the fluid connection. Proceeding from the annulus between the. inside of thesupport tube 29 and the wall surrounding theopening 37, aspring housing 41 extends into theinner filter cavity 33. In thespring housing 41, which has several wall openings which are not shown in the drawings, there is acompression spring 43 which is designated as the first energy storage device here and which, on the one hand, is supported on the upper end of thespring housing 41 and, on the other hand, on aclosing part 45 which is axially movable in thespring housing 41 against the action of thecompression spring 43, which normally pretensions theclosing part 45 into a blocked position at which the connecting means is closed by theclosing part 45 with a spring disk-like closing plate 47 adjoining the edge of the opening 37. This situation is shown inFIGS. 1 to 3 . Instead of an annular body, which has been press-molded from plastic, it can also be made of other suitable materials, such as an aluminum diecasting or plastic injection molding. - On the upper end of the
filter element 11, acompression spring 49, which is designated as the second energy storage mechanism, is clamped between the upper receivingpart 31 and the closedend 15 of the shell of 13. In this way, the unit formed between thereceiving parts shell 13 normally for contact of the lower receivingpart 35 with theclosure part 17. This state is shown inFIGS. 1 and 2 . In theclosure part 17, there are acentral opening 51 through which the connectingpiece 7 can extend and, on the other hand,passages 53 which lie radially farther to the outside and which are blocked when the force of thecompression spring 49 presses the lower receivingpart 35 against theclosure part 17. In order to form a seal on thepassages 53 with this contact, there is aflat ring gasket 55 on the bottom of the lower receivingpart 35. - For installation of the
filter element 11, theshell 13 is pushed into theouter housing 5, theclosure part 17 with its outer periphery being guided on the inside wall of theouter housing 5. For the initial part of the insertion motion, this inside wall has adisplacement section 57 to which asealing section 61 of reduced inside diameter is connected at atransition site 59; when this section is reached in the course of the insertion or pushing-in motion, a reliable seal is formed by theradial seal 23 of theclosure part 17. This state is shown inFIGS. 3 and 4 . - As
FIG. 1 best illustrates, the connectingpiece 7 on the upper end has aninner ring shoulder 63 by which an edge-side annulus 65 is formed into whichribs 67 of theclosing part 45, which project radially to the bottom, travel in the course of the insertion motion. - If, as shown in
FIG. 3 , thefilter element 11 is pushed farther in, the lowerreceiving part 35 remains in the same position as is shown inFIG. 2 , a sealed fluid connection being established between the connectingpiece 7 and theinner filter cavity 33 via thecentral opening 37 on thereceiving part 35. Thereceiving part 35 therefore remains in its axial position because thecompression spring 43, which is stronger than thecompression spring 49 located on the upper end, keeps theclosing part 45 in its blocked position on the edge of theopening 37 and thus supports thereceiving part 35. In this way, as the insertion motion continues, theclosure part 17 is pushed into the region of thesealing section 61 in theouter housing 5, seeFIG. 3 , where thepassages 53 are cleared by raising theflat gasket 55, and theupper compression spring 49 is compressed. - If, proceeding from this state, the
filter element 11 is pressed farther into theouter housing 5, the action of the force of thecompression spring 43 is overcome due to the upper receivingpart 31 adjoining theupper end 15 of theshell 13. Thus the connectingpiece 7 with itsupper edge 69 acts as a control part which acts on the closingpart 45 via itsribs 67 and which moves the closingpart 45 against the action of thecompression spring 43 into thespring housing 41, as a result of which the operating state shown inFIG. 4 is attained, in which both fluid travels to the outer side of thefilter medium 27 via the clearedpassages 53, and also cleaned fluid travels out of theinner filter cavity 33 into the connectingpiece 7 and thus into the interior of the fluid tank past the closingpart 45 which has been forced into the clearance position. In this operating state, in which the two compression springs 43 and 49 are tensioned, thefilter element 11 is secured in the installation position by acover 71, which is indicated schematically only inFIG. 4 . The fluid flow which prevails in the operating state during the filter process is illustrated inFIG. 4 with flow arrows which are not numbered. - It is apparent that the device is characterized by a high degree of user friendliness. Only the
cover 71 need be detached for the process of replacing afilter element 11 with the used-upfilter medium 27. The action of the two tensioned compression springs 43 and 49 moves thefilter element 11 automatically out of the operating position shown inFIG. 4 first into the intermediate position shown inFIG. 3 , after which, as theupper compression spring 49 is released, further withdrawal into the position shown inFIG. 2 automatically takes place, in which the filter cartridge protrudes so far out of theouter housing 5 that it can be comfortably grasped. At the same time, theinner filter cavity 33 is closed by the closingpart 45 which is located in the blocking position, and the space on the outside of thefilter medium 27 is likewise closed on theclosure part 17 because theflat gasket 55 is kept in contact with thepassages 53 of theclosure part 17 by thecompression spring 49.
Claims (10)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009007389 | 2009-02-05 | ||
DE102009007389.2 | 2009-02-05 | ||
DE102009007389A DE102009007389B3 (en) | 2009-02-05 | 2009-02-05 | filter means |
PCT/EP2009/007854 WO2010088938A1 (en) | 2009-02-05 | 2009-11-03 | Filter device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20120018364A1 true US20120018364A1 (en) | 2012-01-26 |
US8852431B2 US8852431B2 (en) | 2014-10-07 |
Family
ID=41479273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/138,137 Active 2031-10-30 US8852431B2 (en) | 2009-02-05 | 2009-11-03 | Filter device |
Country Status (7)
Country | Link |
---|---|
US (1) | US8852431B2 (en) |
EP (2) | EP2393569B1 (en) |
JP (1) | JP5643231B2 (en) |
CN (1) | CN102307638B (en) |
DE (1) | DE102009007389B3 (en) |
ES (1) | ES2506117T3 (en) |
WO (1) | WO2010088938A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113877311A (en) * | 2021-09-23 | 2022-01-04 | 周宇阳 | Desulfurization and denitrification dedusting tower |
CN117160123A (en) * | 2023-11-02 | 2023-12-05 | 福建省德尚电子材料有限公司 | Pipeline structure for replacing photoresist filter element |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010049975A1 (en) * | 2010-10-18 | 2012-04-19 | Hydac Filtertechnik Gmbh | filter means |
DE102010049974C5 (en) * | 2010-10-18 | 2019-04-25 | Hydac Filtertechnik Gmbh | filter means |
EP3287180B1 (en) * | 2016-08-25 | 2019-04-10 | Walter Stauffenberg Gmbh & Co. Kg | Suction return filter |
DE102017005797A1 (en) * | 2017-06-21 | 2018-12-27 | Mann+Hummel Gmbh | Filter system with filter element and secondary element |
CN108057270A (en) * | 2018-01-25 | 2018-05-22 | 连云港天明装备有限公司 | Coalcutter oil absorption filter device |
DE102022114309A1 (en) | 2022-06-07 | 2023-12-07 | Mann+Hummel Gmbh | Liquid filter with a clean-side check valve and arrangement with a liquid filter and a liquid circuit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4052307A (en) * | 1976-07-08 | 1977-10-04 | Wix Corporation | Universal filter mounting attachment |
US5362390A (en) * | 1993-06-28 | 1994-11-08 | Fleetguard, Inc. | Shut-off valve for spin-on filters |
US20030010697A1 (en) * | 2000-02-12 | 2003-01-16 | Norbert Sann | Filter device |
US7323103B2 (en) * | 2004-12-22 | 2008-01-29 | Techspace Aero S.A. | Multifunctional shutting device for lubrication filter |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3297162A (en) * | 1963-09-04 | 1967-01-10 | Purolator Products Inc | Fluid filter with extended service life |
JPS58195606U (en) * | 1982-06-24 | 1983-12-26 | 株式会社小松製作所 | filter device |
US4615812A (en) * | 1984-10-26 | 1986-10-07 | Metro-Line Industries, Inc. | Filter housing for closed fluid circulating system |
JPH0716512A (en) * | 1993-06-30 | 1995-01-20 | Yamaho Giken Kk | Cleaner for atomizer |
JP3671278B2 (en) * | 1995-01-17 | 2005-07-13 | 三菱自動車エンジニアリング株式会社 | Fluid filter |
US7407148B2 (en) * | 2000-04-20 | 2008-08-05 | 3M Innovative Properties Company | Rotary valve assembly for fluid filtration system |
DE102004014149B4 (en) * | 2004-03-20 | 2007-01-25 | Hydac Filtertechnik Gmbh | filter means |
DE102005046783A1 (en) * | 2005-09-29 | 2007-04-05 | Emerson Electric Gmbh & Co. Ohg | Device for filtering and drying of refrigerant flowing through device, has housing and block element replaceably arranged in housing whereby device provided is usable in two flow directions |
JP4887317B2 (en) * | 2008-03-10 | 2012-02-29 | 和興フィルタテクノロジー株式会社 | Oil filter |
-
2009
- 2009-02-05 DE DE102009007389A patent/DE102009007389B3/en active Active
- 2009-11-03 EP EP09759658.9A patent/EP2393569B1/en active Active
- 2009-11-03 ES ES09759658.9T patent/ES2506117T3/en active Active
- 2009-11-03 JP JP2011548534A patent/JP5643231B2/en active Active
- 2009-11-03 WO PCT/EP2009/007854 patent/WO2010088938A1/en active Application Filing
- 2009-11-03 US US13/138,137 patent/US8852431B2/en active Active
- 2009-11-03 CN CN200980156098.7A patent/CN102307638B/en active Active
- 2009-11-03 EP EP12004066.2A patent/EP2502657B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4052307A (en) * | 1976-07-08 | 1977-10-04 | Wix Corporation | Universal filter mounting attachment |
US5362390A (en) * | 1993-06-28 | 1994-11-08 | Fleetguard, Inc. | Shut-off valve for spin-on filters |
US20030010697A1 (en) * | 2000-02-12 | 2003-01-16 | Norbert Sann | Filter device |
US7323103B2 (en) * | 2004-12-22 | 2008-01-29 | Techspace Aero S.A. | Multifunctional shutting device for lubrication filter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113877311A (en) * | 2021-09-23 | 2022-01-04 | 周宇阳 | Desulfurization and denitrification dedusting tower |
CN117160123A (en) * | 2023-11-02 | 2023-12-05 | 福建省德尚电子材料有限公司 | Pipeline structure for replacing photoresist filter element |
Also Published As
Publication number | Publication date |
---|---|
EP2502657A1 (en) | 2012-09-26 |
ES2506117T3 (en) | 2014-10-13 |
CN102307638A (en) | 2012-01-04 |
EP2393569A1 (en) | 2011-12-14 |
WO2010088938A1 (en) | 2010-08-12 |
EP2393569B1 (en) | 2014-08-27 |
EP2502657B1 (en) | 2016-10-19 |
JP5643231B2 (en) | 2014-12-17 |
JP2012516765A (en) | 2012-07-26 |
DE102009007389B3 (en) | 2010-04-15 |
US8852431B2 (en) | 2014-10-07 |
CN102307638B (en) | 2014-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8852431B2 (en) | Filter device | |
US6068763A (en) | Spin-on oil filter with replaceable element | |
US7871517B2 (en) | Filter device | |
CN101501280B (en) | Quick-drain filter | |
US11530632B2 (en) | Oil filter for a motor vehicle and filter cartridge for an oil filter | |
US20080116126A1 (en) | Liquid Filter With Contamination-Protected Clean Side | |
JP2014097504A (en) | Filter with ejection mechanism | |
KR101479397B1 (en) | Filtration apparatus | |
KR102155947B1 (en) | Oil filter and filter cartridge for automobile oil filter | |
US20110220563A1 (en) | Filter device and filter element | |
US9815009B2 (en) | Filter device | |
US6709576B2 (en) | Fuel filter with water discharge | |
US20220016549A1 (en) | End plate, filter element, filter system and method for filtering liquid | |
US11890556B2 (en) | Vented filter cartridge integrated into the upper flange and filtration | |
JPH0399968A (en) | Pressure medium reservoir tank | |
CN105764589A (en) | Filter device comprising adapter piece | |
US9808746B2 (en) | Filter device | |
JP2017536497A (en) | Filter element for internal combustion engine filter device and internal combustion engine filter device | |
US2188745A (en) | Oil filter | |
JP4881698B2 (en) | Filtration device, filtration structure | |
CN216643094U (en) | Screw rod driven discharge valve device | |
CN110582337B (en) | Oil housing, filter element and valving assembly for providing a pre-filled oil volume change | |
JP5948265B2 (en) | Liquid pump | |
CN117488921A (en) | Pressure overflow water draining device and wash basin using same | |
JP2006017084A (en) | Drain structure for oil filter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HYDAC FILTERTECHNIK GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SAKRASCHINSKY, MICHAEL;HENNES, STEFAN;REEL/FRAME:026640/0818 Effective date: 20110704 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551) Year of fee payment: 4 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |